4.4
(39)
309
riders
23
rides
Mountain biking around Alterswil, located in the canton of Fribourg, Switzerland, offers diverse landscapes for outdoor enthusiasts. The region features a mix of forests, valleys, and scenic viewpoints, with varied terrain including the Sense River gorge and areas around Lake Schwarzsee. Elevation gains range from gentle climbs to more demanding ascents, providing a dynamic environment for mountain bikers.
Last updated: October 27, 2026
4.8
(19)
64
riders
37.4km
03:18
840m
830m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.2
(9)
55
riders
38.6km
02:59
560m
560m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

5.0
(1)
34
riders
7.50km
00:40
140m
140m
Easy mountain bike ride.
22
riders
5.78km
00:28
100m
90m
Easy mountain bike ride.
4.7
(3)
17
riders
33.8km
02:50
930m
930m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
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All further useful information about the Bike Flowtrail Schwarzsee can be found on our website: https://fribourg.ch/de/schwarzsee/outdoor-aktivitaeten/bike-flowtrail-schwarzsee/?utm_source=komoot_collection_de&utm_medium=referral&utm_campaign=JO26&utm_content=bike-flowtrail-schwarzsee
2
0
The Flowtrail Schwarzsee offers pure biking fun in the middle of the Fribourg Prealps. With flowing corners, small waves, and dreamlike views of the Schwarzsee, the trail is perfect for those who want to combine riding pleasure and nature. Whether as a relaxed after-work loop or a sporty trail adventure – every mountain bike fan will get their money's worth here. Between Riggisalp and Schwarzsee, the trail leads through a varied landscape of forests, pastures, and impressive views of the lake and mountains. With a length of 3.6 kilometers and 427 meters of descent, the trail is classified as moderately difficult in the upper section and easy further down. A separate entrance to the lower section (Start Blau) provides families and beginners with younger children with particularly easy access. A gentle track with playfully designed obstacles ensures a smooth, relaxed riding experience on the bike. Those looking for more action will find additional, technically more demanding elements along the route. These are deliberately designed so that less experienced riders can easily bypass them at any time via a "Safe Line".
2
1
Yes, this climb on the Way of St. James is tough...not suitable for inexperienced bikers - very steep and rocks which can be slippery
1
0
The old Sodbach Bridge was built from wood in 1867.
2
0
Casual, technically easy trail for ascent and descent possible.
1
0
Great mountain bike trail that is doable with a gravel bike and is a lot of fun.
1
0
Super flowy section without big stones.
2
0
There are over 20 mountain bike trails around Alterswil, catering to various skill levels. This includes 4 easy routes, 17 moderate routes, and 3 more challenging options.
The terrain around Alterswil is diverse, featuring a mix of forests, valleys, and scenic viewpoints. Trails range from easy (S0-S1) suitable for all skill levels, to more demanding routes (S3-S6) that require very good fitness and advanced riding skills, with some sections potentially requiring you to push your bike. Elevation gains vary from gentle climbs to over 3,000 feet for more challenging rides.
Yes, Alterswil offers several easy mountain bike trails perfect for beginners or families. An example is the Supertrail Start – Vita Parcours Trail loop from Alterswil FR, which is 4.7 miles (7.5 km) long and can be completed in about 40 minutes, leading through varied terrain suitable for any fitness level. Another easy option is the Cardinal Beer in Alterswil – Supertrail Start loop from Alterswil FR.
The trails around Alterswil offer a variety of natural features. You can encounter dynamic water elements and notable bridge crossings, such as those found on the Torenöli Frozen Waterfalls – Sodbach Bridge loop from Alterswil FR. The region also features the Sense River (Senseschlucht) with its riverine landscapes and wonderful forest trails. Additionally, you might spot the Gottéron Valley or the Suspension Bridge Over the Sense.
Yes, a popular route that loops around the prominent natural attraction of Lake Schwarzsee is the Beautiful trail – Lake Schwarzsee loop from Alterswil FR. This moderate 24.2 miles (38.9 km) path provides a scenic mountain biking experience with lake views.
The mountain bike trails around Alterswil are highly rated by the komoot community, with an average score of 4.5 stars from over 30 reviews. Riders often praise the diverse landscapes, the mix of forests and valleys, and the scenic viewpoints. The variety of trails, from easy to challenging, is also frequently highlighted, ensuring there's something for every skill level.
Yes, for experienced riders seeking a challenge, Alterswil offers difficult trails. An example is the Höllbachtal Forest – View of Schwyberg loop from Alterswil FR. This route covers 33.8 km and involves significant elevation gain, requiring very good fitness and advanced riding skills.
Many of the mountain bike trails around Alterswil are designed as loops, offering a convenient way to start and end your ride in the same location. Several popular routes, such as the Torenöli Frozen Waterfalls – Sodbach Bridge loop and the Beautiful trail – Lake Schwarzsee loop, are circular.
The diverse landscapes of Alterswil make it appealing for mountain biking across different seasons. While specific seasonal recommendations aren't provided, the region's mix of forests and valleys suggests pleasant riding conditions from spring through autumn. Winter riding might be possible on some trails, but conditions could vary, especially with features like 'Frozen Waterfalls' indicating cold temperatures.
Beyond the trails, Alterswil and its surroundings offer several points of interest. You can explore the Sunken Lane Weissenbach–St. Antoni (Via Jacobi), or discover the Glacial mills of the Gottéron Gorge. For nature lovers, the Düdinger Moos Nature Reserve and Rohrmoos Wetland are also nearby.
Yes, Alterswil supports its biking community. There is a local 'Ski & Bike Garage' that offers bike services, including check-ups and basic to customized maintenance. The area also hosts the annual SenseBike event, indicating a strong local biking culture and infrastructure.


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